Results 161 to 170 of about 10,248 (216)
Mechanical and tribological properties of short discontinuous UHMWPE fiber reinforced UHMWPE
Polymer Bulletin, 1997 The tribological properties of Ultra-High Molecular Weight Polyethylene have generated new concern regarding the long-term clinical performance of total joint replacements. To extend the lifetime of artificial joints, it is necessary to decrease the wear rate of UHMWPE. One possible solution is the incorporation of UHMWPE fibers.
Hofste, JM, vanVoorn, B, Pennings, AJ
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Journal of Undergraduate Research at Minnesota State University, Mankato, 2014 Ultra high molecular weight polyethylene (UHMWPE) is a material used in artificial implants for articular joint replacements. However, these implants have a limited lifespan in which the patient will be pain-free due to the wear of the UHMWPE components.
McKelvogue, Brooke
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Catalysts for UHMWPE and UHMWPE-copolymers
Inorganica Chimica Acta, 2010Abstract Classic inorganic and more recent organometallic compounds capable of polymerizing ethylene to ultra high molecular are compared. Activated catalysts showed varying degrees of productivity when challenged with co-monomers. The general activity trend followed TiCl 3 3 N -(3,5-diiodosalicylidene)cycloheptylamine titanium dichloride was ...
Robert L. Jones +5 more
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UHMWPE for biomedical applications: Performance and functionalization [PDF]
European Polymer Journal, 2020 According to a survey conducted by Grand View Research, the market demand for medical grade UHMWPE has raise remarkably from 60.9 kilotons up to 204.8 kilotons during 2015–2024 valued at $1.36 billion (USD) with a compound annual growth rate of 15 ...
James Njuguna, Bala Kandasubramanian
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Oxidation of orthopaedic UHMWPE
Biomaterials, 2002Retrieved EtO sterilised acetabular cups usually show much less degradation than gamma-ray sterilised cups. Some of our retrieved EtO sterilised cups did, however, reveal unexpected bulk oxidation. It was observed that this oxidation was always accompanied by whitening of the material. This whitening was found to be due to a break-up of the compression
COSTA, Luigi +3 more
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Melt miscibility of HDPE/UHMWPE, LDPE/UHMWPE, and LLDPE/UHMWPE blends detected by dynamic rheometer
Polymer Science Series A, 2014The dynamic rheological behavior of high density polyethylene (HDPE)/ultrahigh molecular weight polyethylene (UHMWPE) blends, low density polyethylene (LDPE)/UHMWPE blends and linear low density polyethylene (LLDPE)/ UHMWPE blends was measured in parallel plate rheometer at 200°C.
Yang Chen, Huawei Zou, Ya Cao, Mei Liang
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Macromolecular Symposia, 2009
AbstractPolyolefin coordination catalysts useful for producing UHMWPE are surveyed, including classic Ziegler‐Natta (ZN), current commercial generation ZN, metallocene single site, and non‐metallocene. Catalysts were prepared and compared for productivity and selected polymer properties under a variety of conditions.
R.L. Jones, M. Armoush
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AbstractPolyolefin coordination catalysts useful for producing UHMWPE are surveyed, including classic Ziegler‐Natta (ZN), current commercial generation ZN, metallocene single site, and non‐metallocene. Catalysts were prepared and compared for productivity and selected polymer properties under a variety of conditions.
R.L. Jones, M. Armoush
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Accelerated aging studies of UHMWPE. II. Virgin UHMWPE is not immune to oxidative degradation
Journal of Biomedical Materials Research, 2002AbstractIn Part I of this series, we showed that aging at elevated oxygen pressure is more successful at increasing the depth to which degradation occurs although it, too, generally causes greater degradation at the surface than at the subsurface.
A A, Edidin +5 more
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Processing of UHMWPE and HA/UHMWPE nanocomposite for biomedical applications
2014Ultrahigh molecular weight polyethylene (UHMWPE) is an implant material for orthopedic implants because of its excellent mechanical properties. However, its applications were limited by the poor processability, particularly its use as matrix materials for bone-analogue.
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2016
Removal or transfer of material from contacting surfaces due to their relative movement under load. Wear can be measured by mass change, volume measurement or by the depth of the wear tracks. The two inevitable consequences are shedding of wear products and change of the geometry of the articulation.
B. M. Wroblewski +2 more
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Removal or transfer of material from contacting surfaces due to their relative movement under load. Wear can be measured by mass change, volume measurement or by the depth of the wear tracks. The two inevitable consequences are shedding of wear products and change of the geometry of the articulation.
B. M. Wroblewski +2 more
openaire +1 more source